370 lines
11 KiB
C
370 lines
11 KiB
C
/*
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* Copyright © 2009 Intel Corporation
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* Copyright © 1998 Keith Packard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Zhigang Gong <zhigang.gong@gmail.com>
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*
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*/
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#include <stdlib.h>
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#include "glamor_priv.h"
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void
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glamor_destroy_fbo(glamor_screen_private *glamor_priv,
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glamor_pixmap_fbo *fbo)
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{
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glamor_make_current(glamor_priv);
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if (fbo->fb)
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glDeleteFramebuffers(1, &fbo->fb);
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if (fbo->tex)
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glDeleteTextures(1, &fbo->tex);
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free(fbo);
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}
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static int
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glamor_pixmap_ensure_fb(glamor_screen_private *glamor_priv,
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glamor_pixmap_fbo *fbo)
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{
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int status, err = 0;
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glamor_make_current(glamor_priv);
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if (fbo->fb == 0)
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glGenFramebuffers(1, &fbo->fb);
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assert(fbo->tex != 0);
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glBindFramebuffer(GL_FRAMEBUFFER, fbo->fb);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
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GL_TEXTURE_2D, fbo->tex, 0);
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status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
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if (status != GL_FRAMEBUFFER_COMPLETE) {
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const char *str;
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switch (status) {
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case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
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str = "incomplete attachment";
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break;
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case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
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str = "incomplete/missing attachment";
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break;
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case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
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str = "incomplete draw buffer";
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break;
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case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
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str = "incomplete read buffer";
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break;
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case GL_FRAMEBUFFER_UNSUPPORTED:
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str = "unsupported";
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break;
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case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE:
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str = "incomplete multiple";
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break;
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default:
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str = "unknown error";
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break;
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}
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glamor_fallback("glamor: Failed to create fbo, %s\n", str);
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err = -1;
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}
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return err;
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}
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glamor_pixmap_fbo *
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glamor_create_fbo_from_tex(glamor_screen_private *glamor_priv,
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PixmapPtr pixmap, int w, int h, GLint tex, int flag)
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{
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const struct glamor_format *f = glamor_format_for_pixmap(pixmap);
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glamor_pixmap_fbo *fbo;
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fbo = calloc(1, sizeof(*fbo));
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if (fbo == NULL)
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return NULL;
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fbo->tex = tex;
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fbo->width = w;
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fbo->height = h;
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fbo->is_red = f->format == GL_RED;
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if (flag != GLAMOR_CREATE_FBO_NO_FBO) {
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if (glamor_pixmap_ensure_fb(glamor_priv, fbo) != 0) {
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glamor_destroy_fbo(glamor_priv, fbo);
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fbo = NULL;
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}
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}
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return fbo;
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}
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static int
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_glamor_create_tex(glamor_screen_private *glamor_priv,
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PixmapPtr pixmap, int w, int h)
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{
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const struct glamor_format *f = glamor_format_for_pixmap(pixmap);
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unsigned int tex;
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glamor_make_current(glamor_priv);
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glGenTextures(1, &tex);
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glBindTexture(GL_TEXTURE_2D, tex);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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if (f->format == GL_RED)
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_RED);
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glamor_priv->suppress_gl_out_of_memory_logging = true;
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glTexImage2D(GL_TEXTURE_2D, 0, f->internalformat, w, h, 0,
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f->format, f->type, NULL);
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glamor_priv->suppress_gl_out_of_memory_logging = false;
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if (glGetError() == GL_OUT_OF_MEMORY) {
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if (!glamor_priv->logged_any_fbo_allocation_failure) {
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LogMessageVerb(X_WARNING, 0, "glamor: Failed to allocate %dx%d "
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"FBO due to GL_OUT_OF_MEMORY.\n", w, h);
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LogMessageVerb(X_WARNING, 0,
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"glamor: Expect reduced performance.\n");
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glamor_priv->logged_any_fbo_allocation_failure = true;
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}
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glDeleteTextures(1, &tex);
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return 0;
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}
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return tex;
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}
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glamor_pixmap_fbo *
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glamor_create_fbo(glamor_screen_private *glamor_priv,
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PixmapPtr pixmap, int w, int h, int flag)
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{
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GLint tex = _glamor_create_tex(glamor_priv, pixmap, w, h);
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if (!tex) /* Texture creation failed due to GL_OUT_OF_MEMORY */
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return NULL;
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return glamor_create_fbo_from_tex(glamor_priv, pixmap, w, h,
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tex, flag);
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}
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/**
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* Create storage for the w * h region, using FBOs of the GL's maximum
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* supported size.
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*/
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glamor_pixmap_fbo *
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glamor_create_fbo_array(glamor_screen_private *glamor_priv,
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PixmapPtr pixmap, int flag,
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int block_w, int block_h,
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glamor_pixmap_private *priv)
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{
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int w = pixmap->drawable.width;
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int h = pixmap->drawable.height;
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int block_wcnt;
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int block_hcnt;
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glamor_pixmap_fbo **fbo_array;
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BoxPtr box_array;
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int i, j;
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priv->block_w = block_w;
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priv->block_h = block_h;
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block_wcnt = (w + block_w - 1) / block_w;
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block_hcnt = (h + block_h - 1) / block_h;
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box_array = calloc(block_wcnt * block_hcnt, sizeof(box_array[0]));
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if (box_array == NULL)
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return NULL;
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fbo_array = calloc(block_wcnt * block_hcnt, sizeof(glamor_pixmap_fbo *));
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if (fbo_array == NULL) {
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free(box_array);
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return FALSE;
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}
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for (i = 0; i < block_hcnt; i++) {
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int block_y1, block_y2;
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int fbo_w, fbo_h;
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block_y1 = i * block_h;
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block_y2 = (block_y1 + block_h) > h ? h : (block_y1 + block_h);
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fbo_h = block_y2 - block_y1;
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for (j = 0; j < block_wcnt; j++) {
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box_array[i * block_wcnt + j].x1 = j * block_w;
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box_array[i * block_wcnt + j].y1 = block_y1;
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box_array[i * block_wcnt + j].x2 =
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(j + 1) * block_w > w ? w : (j + 1) * block_w;
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box_array[i * block_wcnt + j].y2 = block_y2;
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fbo_w =
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box_array[i * block_wcnt + j].x2 - box_array[i * block_wcnt +
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j].x1;
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fbo_array[i * block_wcnt + j] = glamor_create_fbo(glamor_priv,
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pixmap,
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fbo_w, fbo_h,
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GLAMOR_CREATE_PIXMAP_FIXUP);
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if (fbo_array[i * block_wcnt + j] == NULL)
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goto cleanup;
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}
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}
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priv->box = box_array[0];
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priv->box_array = box_array;
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priv->fbo_array = fbo_array;
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priv->block_wcnt = block_wcnt;
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priv->block_hcnt = block_hcnt;
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return fbo_array[0];
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cleanup:
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for (i = 0; i < block_wcnt * block_hcnt; i++)
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if (fbo_array[i])
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glamor_destroy_fbo(glamor_priv, fbo_array[i]);
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free(box_array);
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free(fbo_array);
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return NULL;
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}
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void
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glamor_pixmap_clear_fbo(glamor_screen_private *glamor_priv, glamor_pixmap_fbo *fbo,
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const struct glamor_format *pixmap_format)
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{
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glamor_make_current(glamor_priv);
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assert(fbo->fb != 0 && fbo->tex != 0);
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if (glamor_priv->has_clear_texture) {
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glClearTexImage(fbo->tex, 0, pixmap_format->format, pixmap_format->type, NULL);
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}
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else {
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glamor_set_destination_pixmap_fbo(glamor_priv, fbo, 0, 0, fbo->width, fbo->height);
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glClearColor(0.0, 0.0, 0.0, 0.0);
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glClear(GL_COLOR_BUFFER_BIT);
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}
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}
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glamor_pixmap_fbo *
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glamor_pixmap_detach_fbo(glamor_pixmap_private *pixmap_priv)
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{
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glamor_pixmap_fbo *fbo;
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if (pixmap_priv == NULL)
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return NULL;
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fbo = pixmap_priv->fbo;
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if (fbo == NULL)
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return NULL;
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pixmap_priv->fbo = NULL;
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return fbo;
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}
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/* The pixmap must not be attached to another fbo. */
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void
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glamor_pixmap_attach_fbo(PixmapPtr pixmap, glamor_pixmap_fbo *fbo)
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{
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glamor_pixmap_private *pixmap_priv;
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pixmap_priv = glamor_get_pixmap_private(pixmap);
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if (pixmap_priv->fbo)
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return;
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pixmap_priv->fbo = fbo;
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switch (pixmap_priv->type) {
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case GLAMOR_TEXTURE_ONLY:
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case GLAMOR_TEXTURE_DRM:
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pixmap_priv->gl_fbo = GLAMOR_FBO_NORMAL;
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pixmap->devPrivate.ptr = NULL;
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default:
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break;
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}
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}
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void
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glamor_pixmap_destroy_fbo(PixmapPtr pixmap)
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{
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ScreenPtr screen = pixmap->drawable.pScreen;
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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glamor_pixmap_private *priv = glamor_get_pixmap_private(pixmap);
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glamor_pixmap_fbo *fbo;
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if (glamor_pixmap_priv_is_large(priv)) {
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int i;
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for (i = 0; i < priv->block_wcnt * priv->block_hcnt; i++)
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glamor_destroy_fbo(glamor_priv, priv->fbo_array[i]);
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free(priv->fbo_array);
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priv->fbo_array = NULL;
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}
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else {
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fbo = glamor_pixmap_detach_fbo(priv);
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if (fbo)
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glamor_destroy_fbo(glamor_priv, fbo);
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}
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}
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Bool
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glamor_pixmap_ensure_fbo(PixmapPtr pixmap, int flag)
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{
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glamor_screen_private *glamor_priv;
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glamor_pixmap_private *pixmap_priv;
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glamor_pixmap_fbo *fbo;
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glamor_priv = glamor_get_screen_private(pixmap->drawable.pScreen);
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pixmap_priv = glamor_get_pixmap_private(pixmap);
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if (pixmap_priv->fbo == NULL) {
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fbo = glamor_create_fbo(glamor_priv, pixmap, pixmap->drawable.width,
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pixmap->drawable.height, flag);
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if (fbo == NULL)
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return FALSE;
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glamor_pixmap_attach_fbo(pixmap, fbo);
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}
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else {
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/* We do have a fbo, but it may lack of fb or tex. */
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if (!pixmap_priv->fbo->tex)
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pixmap_priv->fbo->tex =
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_glamor_create_tex(glamor_priv, pixmap, pixmap->drawable.width,
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pixmap->drawable.height);
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if (flag != GLAMOR_CREATE_FBO_NO_FBO && pixmap_priv->fbo->fb == 0)
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if (glamor_pixmap_ensure_fb(glamor_priv, pixmap_priv->fbo) != 0)
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return FALSE;
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}
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return TRUE;
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}
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_X_EXPORT void
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glamor_pixmap_exchange_fbos(PixmapPtr front, PixmapPtr back)
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{
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glamor_pixmap_private *front_priv, *back_priv;
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glamor_pixmap_fbo *temp_fbo;
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front_priv = glamor_get_pixmap_private(front);
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back_priv = glamor_get_pixmap_private(back);
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temp_fbo = front_priv->fbo;
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front_priv->fbo = back_priv->fbo;
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back_priv->fbo = temp_fbo;
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}
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